UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                    FORM 8-K

                                 Current Report
                                   Pursuant to
                             Section 13 or 15(d) of
                       The Securities Exchange Act of 1934


         Date of Report (Date of Earliest Event Reported): June 1, 2004


                         ALLMERICA FINANCIAL CORPORATION
                         -------------------------------
             (Exact name of Registrant as specified in its charter)


        Delaware                      1-13754                   04-3263626
 State or other jurisdic-     (Commission File Number)       (I.R.S. Employer
 tion of incorporation)                                      Identification No.)



               440 Lincoln Street, Worcester, Massachusetts 01653
                    (Address of principal executive offices)
                                   (Zip Code)

                                 (508) 855-1000
              (Registrant's telephone number, including area code)

















Item 7.  Financial Statements and Exhibits

(a)      Not applicable.

(b)      Not applicable.

(c)      Exhibits.

         The following exhibit is furnished herewith.

         Exhibit 99.1  Press  Release  dated June 1,  2004,  announcing  second
                       quarter catastrophe storm losses.

Item 9.  Regulation FD Disclosure

On June 1, 2004,  Allmerica Financial  Corporation  announced that it expects to
incur  approximately  $13 million in pre-tax  catastrophe  losses resulting from
severe  thunderstorms,  hail and tornadoes,  principally in Michigan from May 20
through  May  27,  2004.  This  brings  total  pre-tax   catastrophe  losses  to
approximately  $16  million  for the  quarter  to date, or $0.26 per share after
taxes.  The  press  release  is furnished as Exhibit 99.1 hereto.





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SIGNATURES


Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.

                                              Allmerica Financial Corporation
                                              Registrant

                                              By: /s/ Edward J. Parry III
                                              ---------------------------
                                              Edward J. Parry, III
                                              Chief Financial Officer,
                                              Executive Vice President,
                                              Principal Accounting Officer,
                                              and Director






Date: June 1, 2004



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Exhibit Index

Exhibit 99.1  Press  Release,  dated  June 1, 2004,  announcing  second  quarter
              catastrophe storm losses.


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